I got an Oscilloscope!

[What's_nitro?]

I've needed one for a loooooooooong time!

It's a Hitachi V-422. I have been bidding on these forever and never managed to win any. I'm too cheap, I guess! This one looks like it will do everything I need it too! It has 2 inputs and supports up to a 40MHz signal. I have a few pet projects that require some waveform analysis of PFN's. I'm very excited about this! CAN YOU TELL??!?!?!

[mikey09120]

oooooo...what does it do?

[eovnu87435ds]

it oscillizes things

[What's_nitro?]

Hahaha! You guys make me ! You guys know that household AC power is 60Hz, right? If I hook a probe to the outlet I can see the AC waveform. Like in the picture on the eBay auction. In a nutshell, an oscilloscope allows us to view electrical signals in real-time.

I remember my dad having one when I was a kid....( he was an EE with Boeing)

[JERRY2KONE]

Originally Posted by What's_nitro?

Hahaha! You guys make me ! You guys know that household AC power is 60Hz, right? If I hook a probe to the outlet I can see the AC waveform. Like in the picture on the eBay auction. In a nutshell, an oscilloscope allows us to view electrical signals in real-time.

And then what??? How much did you pay for this thing? I am curious as I have one in storage doing nothing but collecting dust. I am sure that I will never use it. That was funny "Oscillisizing" stuff. How many things do you think you can do with an oscillascope anyway, unless you are some kind of electrical engineer or high paid anylist of some sort. I know that these things are not cheap brand new, but how much can they fetch used? Plus just think of how much R/C gear you can buy with that money anyway???

[What's_nitro?]

Originally Posted by azjc

I remember my dad having one when I was a kid....( he was an EE with Boeing)

I'd kill for that job....

I used them throughout HS in my electronics shop, but I couldn't afford one of my own. Then I discovered ebay! Some years later, here we are!

/sigh

I was looking into an Agilent 54810A Infinium Oscilloscope but at around $5000 I just can't justify it. Not to mention that most of the RC stuff that we work with is DC. I could use a Spectrum Analyzer, but that is really pretty useless as far as RC goes as well. A Power Meter, no good, doesn't do what you think.

Pretty much I need a good multimeter and DC power supply. Most of the other fancy schmancy electronic stuff is not good for what we do at home. I am going to ask how to create a 100amp dummy load at work.

Is this a large enough load to be considered a "burst" as far as ESCs go (ie the MMM/2200 combo). I would like to be able to get my hands on two dummy loads, one that draws a "burst" rating, around 100amps, and one that is a "constant" rating. That way I can use a Multimeter to determine remaining capacity and calculate voltage drops.

Someone needs to standardize the "C" rating. Otherwise I am going to repackage LiPos and say that they have "W" rating instead. And of course "W" is better than "C", maybe I'll go with "A" , oh wait, that's in use, and so is "W", dang.

"L"!! Yes MA batteries have a 4L constant and a 8L burst while the SPCs have a 6L and 13L burst.

I'm just blabbering now, sorry.

[What's_nitro?]

Originally Posted by JERRY2KONE

And then what??? How much did you pay for this thing? I am curious as I have one in storage doing nothing but collecting dust. I am sure that I will never use it. That was funny "Oscillisizing" stuff. How many things do you think you can do with an oscillascope anyway, unless you are some kind of electrical engineer or high paid anylist of some sort. I know that these things are not cheap brand new, but how much can they fetch used? Plus just think of how much R/C gear you can buy with that money anyway???

I won the auction for $130 and change. Shipping from CA was $24- and these things are HEAVY!!!!

You can do A LOT of stuff with one of these. If I was so inclined, I could use it to see (electrically) how changing all the settings on my MMM actually affects how the motor operates! I would need some other components, but it's do-able!

[JERRY2KONE]

Reading your words is funny. It sounds as if you are trying to convince yourself that it was worth the $130. If you have no plans for it then what was the point? Just to have one??? (You can do A LOT of stuff with one of these. If I was so inclined, I could use it to see how changing all the settings on my MMM actually affects how the motor operates! I would need some other components, but it's do-able!) Just an observation. Still I know they are costly to own, but if you have nothing to do that will benefit you like reparing R/C gear or making money doing work for someone else, then why bother? I am sure that $130 was a good deal as an oscillascope has a unique purpose that is genuine, but if you cannot make any money with it, then why? I suppose once you have it sitting around the garage for a while you can always relist it on EBay and get your money back.

[eovnu87435ds]

ive seen people get some potentiometers, and play pong with an oscilliscope... so there ya have it. its a heavy $130 pong machine

[What's_nitro?]

FireWire79-

You just need some power resistors (or 200' of solid 10awg copper wire) for your dummy load. 100A is a TON of power though. At 6s it's over 2100 watts if the cells hold 3.5V/cell!! If you were doing momentary testing (<3 seconds on, 5% duty cycle, fan cooled), I guess a power rating of 500W on the resistors would be OK. At 21V, a 0.21 ohm resistor is needed. To make things easier, look for 0.2 ohm - 0.25 ohm. A 0.25 ohm is around 90A current. It isn't difficult to build, but the resistors are going to be EXPENSIVE to say the least.

Edit- Wow! I just did an eBay search and found this! Man this would be PERFECT for that dummy load!!! not a bad starting price either!

[What's_nitro?]

Originally Posted by JERRY2KONE

Reading your words is funny. It sounds as if you are trying to convince yourself that it was worth the $130. If you have no plans for it then what was the point?

You make me too! Of course I have plans for it. I'm not as spend_happy as some members here *cough* TDC57 *cough*.....

From my first post: The letters P-F-N. Which stands for pulse-forming network. Which is used in: LASERS, EMP projectors, coil guns, and my favorite- RAILGUNS!!!!!!!

Originally Posted by What's_nitro?

FireWire79-

You just need some power resistors (or 200' of solid 10awg copper wire) for your dummy load. 100A is a TON of power though. At 6s it's over 2100 watts if the cells hold 3.5V/cell!! If you were doing momentary testing (<3 seconds on, 5% duty cycle, fan cooled), I guess a power rating of 500W on the resistors would be OK. At 21V, a 0.21 ohm resistor is needed. To make things easier, look for 0.2 ohm - 0.25 ohm. A 0.25 ohm is around 90A current. It isn't difficult to build, but the resistors are going to be EXPENSIVE to say the least.

Edit- Wow! I just did an eBay search and found this! Man this would be PERFECT for that dummy load!!! not a bad starting price either!

Oh my god, I have two of those laying around my shop that are unwanted. I could totally snatch one of them. I am totally willing to run such a large load. Its what I do, as I have signal and function generators laying around at the shop. I just want to find some sort of way to accurately measure the discharge rates of LiPos. I just don't like the "C" system, I just want something more quantifiable.

[What's_nitro?]

Haha! Awesome! You have the carbon pile type? They would be ideal since they're non-inductive.